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    Suzhou Electric Appliance Research Institute
    期刊號(hào): CN32-1800/TM| ISSN1007-3175

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    交流濾波器電容器不平衡保護(hù)動(dòng)作邏輯分析

    來(lái)源:電工電氣發(fā)布時(shí)間:2020-06-18 13:18 瀏覽次數(shù):957
    交流濾波器電容器不平衡保護(hù)動(dòng)作邏輯分析
     
    何茂慧,鄧凱,谷相宏,馮軒
    (國(guó)網(wǎng)江蘇省電力有限公司檢修分公司,江蘇 南京 210003)
     
        摘 要:交流濾波器是特高壓換流站的重要設(shè)備之一。針對(duì)泰州換流站發(fā)生的一起交流濾波器電容器不平衡保護(hù)動(dòng)作跳閘事件,分析了電容器不平衡保護(hù)的動(dòng)作邏輯,根據(jù)電容器不平衡保護(hù)整定原則,結(jié)合實(shí)際電容器參數(shù)配置,推導(dǎo)計(jì)算了損壞不同個(gè)數(shù)元件下的電容器不平衡電流和過(guò)電壓倍數(shù),綜合評(píng)估了實(shí)際電容器的過(guò)電壓能力,并提出了相應(yīng)的建議,對(duì)特高壓換流站的安全穩(wěn)定運(yùn)行具有一定的參考價(jià)值。
        關(guān)鍵詞:交流濾波器;電容器;不平衡保護(hù);過(guò)電壓
       中圖分類號(hào):TM531.5     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2020)06-0038-05
     
    Analysis of Action Logic of AC Filter Capacitor Unbalanced Protection
     
    HE Mao-hui, DENG Kai, GU Xiang-hong, FENG Xuan
    (State Grid Jiangsu Electric Power Co., Ltd Maintenance Branch Company, Nanjing 210003, China)
     
        Abstract: AC filter is one of the important equipments in UHV converter station, in this paper, according to an AC filter capacitor unbalance protection action trip event in Taizhou converter station, the action logic of capacitor unbalance protection is analyzed in detail. Based on the setting principle of capacitor unbalanced protection and the actual configuration of capacitor parameters, the unbalanced current and over-voltage multiple of capacitor under different damaged elements are deduced and calculated, also the over-voltage capacity of actual capacitor is comprehensively evaluated, which has certain reference value for the safe and stable operation of UHV converter station.
        Key words: AC filter; capacitor; unbalance protection; over-voltage
     
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